1、檢查目前安裝的PHP套件
yum list installed | grep php
如果有安裝的PHP套件，先刪除他們
yum remove php.x86_64 php-cli.x86_64 php-common.x86_64 php-gd.x86_64 php-ldap.x86_64 php-mbstring.x86_64 php-mcrypt.x86_64 php-mysql.x86_64 php-pdo.x86_64
#2、設定yum來源（6.8版本）
rpm -Uvh http://ftp.iij.ad.jp/pub/linux/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm yum源（7.0版本） yum install epel-release rpm -ivh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
3、安裝PHP5.6.x
yum install --enablerepo=remi --enablerepo=remi-php56 php php-opcache php-devel php-mbstring php-mcrypt php-mysqlnd php-phpunit-PHPUnit php-pecl-xdebug php-pecl-xhprof
用PHP指令檢視版本：
# php --version PHP 5.6.0 (cli) (built: Sep 3 2014 19:51:31) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.6.0, Copyright (c) 1998-2014 Zend Technologies with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2014, by Zend Technologies with Xdebug v2.2.5, Copyright (c) 2002-2014, by Derick Rethans
4、安裝PHP-fpm
yum install --enablerepo=remi --enablerepo=remi-php56 php-fpm
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